<template>
    <div class='login_container'>
        <div class='login_box'>
            <!-- 头像 -->
            <div class="avatar_box">
                <img src="../assets/logo.png" alt="">
            </div>
            <!-- 登录表单 -->
            <el-form ref="loginFormRef" :rules='loginFormrules' :model="loginForm" label-width="0px" class='login_form'>
                <!-- 用户名 -->
                <el-form-item  prop='username'>
                    <el-input v-model="loginForm.username" prefix-icon="iconfont icon-user"></el-input>
                </el-form-item>
                <!-- 密码 -->
                 <el-form-item prop='password' >
                    <el-input type='password' v-model="loginForm.password" prefix-icon="iconfont icon-3702mima"></el-input>
                </el-form-item>
                <!-- 按钮 -->
                <el-form-item class="btns">
                    <el-button type="primary"  @click="login()">登录</el-button>
                    <el-button type="info" @click="resetLoginForm()">重置</el-button>
                </el-form-item>
            </el-form>
        </div>
    </div>
</template>
<script>
export default {
    data(){
        return{
                  // 登录表单的数据
                loginForm:{
                        username:'admin',
                        password:'123456'
                    },
                loginFormrules:{
                    //验证用户名  密码
                    username:[
                        { required: true, message: '请输入登录名称', trigger: 'blur' },
                        { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
                    ],
                    password:[
                        { required: true, message: '请输入密码', trigger: 'blur' },
                        { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
                    ]
            }
        }
    },
    methods:{
        login(){
            //表单预校验
            this.$refs.loginFormRef.validate( async valid=>{
                //boolean值
                if(!valid) return
                const { data: res }=await this.$http.post('login',this.loginForm);
                if(res.meta.status!==200) return this.$message.error('登录失败'); 
                this.$message.success('登录成功');
                //成功后保存token 到sessionStorage中 键值对
                console.log(res)
                window.sessionStorage.setItem('token',res.data.token)
                //编程时导航  跳转到home
                this.$router.push('/home');
           })
        },
        resetLoginForm(){
            // console.log(this);
            this.$refs.loginFormRef.resetFields();
        }
    }

}
</script>
<style lang='less' scoped>
.login_container{
    background-color: #2b4b6b;
    height: 100%;
}
.login_box{
width: 450px;
height: 300px;
background-color: #fff;
border-radius: 3px;
position: absolute;
left:50%;
top:50%;
transform: translate(-50%,-50%);
.avatar_box{
    height: 130px;
    width: 130px;
    border:1px solid #eee;
    border-radius: 50%;
    padding:10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left:50%;
    transform: translate(-50%,-50%);
    background-color: #fff;
    img{
        width: 100%;
        height: 100%;
        border-radius: 50%;
        background-color: #eee;
    }
}
  .login_form{
      position:absolute;
      bottom: 0;
      width: 100%;
      padding:0 20px;
      box-sizing: border-box;
   }
  .btns {
     display: flex;
     justify-content: flex-end;
   }
}
</style>